Gas-burner.



T. G. PALMER.

GAS BURNER.

APPLICATION FILED mAn.23. 19H.

Patented Jan. 8, 1918.

mwgwla I do hereby declare rinrrsrrns Fli lmlt,

TRUMAN e. PALMER, or CH CAGO, ILLINOIS.

GAS-BURNER.

Specification of Letters Patent. Patented Jan, S, 19118.

Application filed March 23, 1917. Serial No. 156,872.

ing units and the like, and has for its object to provide burners of this character with a,

simple and efficient means for applying maintaining the foraminous diaphragms or wire gauze sections in proper relation in the mixing chamber to eliminate the noise or roar common to burners of this character to insure a proper mixture of the gas and air, and to admit of the ready cleaning of or removal of the gauze sections;

The hive/11131011 18 lllustrated 1n the accompanying drawings, in wl'nch Figure 1 is a sectional elevation of a burner having the lnvention applled thereto;

Fig. 2 is a sectional elevation of the gauzecarrying thimble and Fig. 8 is a similar view of the burner cap.

Referring to the drawings, 1 indicates the burner tube upon which is removably supported a sleeve 2 carrying a mixing cham her at, having at its top a telescoping cap 5 provided with a wire gauze diaphragm or strainer 5, Constructed and arranged in accordance with standard practice.

In burners of this character, it is necessary to provide the mixing chamber with a foraminous diaphragm for the purpose of producing a proper admixture of the gas and air before the mixture is burned above the gauze cap, and to prevent the flame flashing back and igniting the gas at the base of the burner. Incidentally, also, the foraminous diaphragm, which is usually in the form of a wire gauze disk, serves to reduce the roar or noise which is characteristic of Bunsen burners and which is objectionable when the burners are to be used for domestic purposes, such as lighting and heating. Variou means for securing the gauze or foraminous diaphragm within the mixing chamber have been devised, but, so far as applicant is advised, none of the prior dediately impairs vices have proved entirely satisfactory, or eflicient, for the reason that when one dirticulty has been overcome, the organization, by means of which the result has been effected, gives rise to other objectionable effects and difliculties. It has been recognized that the foraminous diaphragm or gauze must be located in a definite part of the mixing chamber to produce the desired degree of EllICIGIICy as to mixture,

and when'so located to accomplish this result, any derimgement of the relative ad ustment of the gauze results in an improper mixture and a noisy burner. The gauze is liable to become clogged either by dust carried in with the air, which immethe efficiency of the device and requires careful. cleaning toremove the dust and dirt from the gauze. all of the standard burners'used for lighting purposes, is'customar r to form one or more beads in the sheet-metal body of the mixing chamber to support the gauze, which latter is usually dished orlianged atits by deposits from the gas, or

In practically a edges and forced into position against one of the beads or beti'veen two of the beads. hen this expedient is adopted, it is almost impossible to purposes, or if successful removal can be effected, is diflicultto replace the gauze in proper position.

he present invention is designed to overcome all of'these difficulties and to provide a simple form of device whereby the gauze screen or screens will be properly located to effect a proper admixture of the air and gas, to completely eliminate the so-called roar or noise of the burner, and to admit of the parts being removed for cleaning the gauze and replaced with absolute certainty of the part being restored to their proper relations. To these ends, there is provided a sheet-metal thimble 7 provided with a reduced lower end which produces a shoulder 8 which is adapted to support the thimble on the bead or flange 6 which is ordinarily intended to support the gauze directly. The extreme lower end of the thimble is provided with an inturned flange 11 and the xtreme upper edge is finished with a slight upwardly turned flange 14 adapted to engage the upper edge of the mixing chamber t and support the thimble in proper relation in the chamber when the latter is not provided with a bead, such as 6. It has been found advantageous to employ two screens of rela remove the=ga1izefo1- cleaning tively coarse mesh, in lieu of a single screen of fine mesh. The double screen arrangement effects a proper admixture of the air and gas, wholly eliminates the noise, and, furthermore, materially reduces the tendency of the gauze to become clogged with dust, dirt, or deposits from the gas. isshown in the drawings, the upper screen member being of a disk-like form resting upon the shoulder 8 of the thimble and held accurately in position by means of a flanged metal ring 9. The lower screen member 12 rests upon the lower flange 11 of the thimble and is similarly held in position by means of a flanged ring 13, the parts occupying the relative positions illustrated in Figs. 1 and 2, which, as will be seen, admits oi the thimble with the double screen therein being removed bodily for the purpose of cleaning the gauze of any accumulated dust or deposits. The upper edge of the thimble projects slightly above the upper marginal edge of the mixing chamber, so that the thimble can be readily engaged for removal, but will, under all conditions, be properly located in the mixing chamber, whether the latter is provided with a supporting bead or not, .inasmuch as the thimble will be supported by the bead 6 engaging the shoulder 8, or by the upper edge of the mixing chamber engaging the flange 14:, or by the engagement of both sets of supporting members. As indicated, the double screen, the individual members of which are of coarser mesh than theordinary single screen, not only reduces the tendency of the screens to clo but admits of them being cleaned much more readily than a single fine mesh screen, and as the cleaning can be effected by removing the thimble from the burner, the chances of Copies of this patent may be obtained for Such a double screen.

disturbing the proper-location of the screen or screens are practically eliminated. If either of the screens is damaged, it may be readily removed and replaced with accuracy and facility as will be apparent.

W hat I claim 1s:

1 ;An attachment for Bunsen burners comprising a tubular thimble having an outwardlyflanged upper marginal edge adapted to engage the upper edge of the mixing mediate shoulder and a flange at its'lower end, foraminous diaphrgams supported by said shoulder and flange, and rings engaging the walls of the thimble and'serving to hold the diaphragms in position.

4. An attachment for Bunsen burners com prising'a tubular thimble having an outturned flange at its upper end, an inturned flange at its lower end, and a. shoulder intermediate its ends, foraminous diaphragms supported on the intermediatefshoulder and lower flange, res1. ectively, and rings engaging the interior surface of the thimble and the respective diaphragm's to hold the latter in position.

In testimony whereof I aflix my signature.

TRUMAN e. PALMER.

Washington, D. G. 

